Extraembryonic MembranesPlacentaFetal Membranes, Premature RuptureAmnionChorionLabor, ObstetricPregnancyDeciduaLabor OnsetPlacenta, RetainedPlacenta DiseasesMembranesCell MembraneTrophoblastsMembrane LipidsAmniotic FluidIntracellular MembranesObstetric Labor, PrematureMembrane PotentialsChorioamnionitisPlacenta PreviaMembranes, ArtificialPlacenta AccretaGestational AgeErythrocyte MembraneDeuterium Exchange MeasurementPregnancy, AnimalMembrane FluidityParturitionPulmonary Gas ExchangeMyometriumPregnancy Trimester, ThirdCell Membrane PermeabilityExchange Transfusion, Whole BloodSister Chromatid ExchangeBasement MembraneCesarean SectionCells, CulturedTerm BirthFetusMolecular Sequence DataUterusTissue AdhesivesPremature BirthFetoscopyHydrogen-Ion ConcentrationCattleCulture TechniquesKineticsImmunohistochemistryMicroscopy, ElectronAmino Acid SequenceMatrix Metalloproteinase 9Labor, InducedSodiumRelaxinProtein BindingRNA, MessengerMembrane Transport ProteinsModels, BiologicalMaternal-Fetal ExchangeCarrier ProteinsTissue Culture TechniquesTime FactorsCalciumCell LineAbortion, SepticChorionic VilliMembrane GlycoproteinsSodium-Hydrogen AntiporterHydrogenMycoplasma hominisReverse Transcriptase Polymerase Chain ReactionProtein Structure, TertiaryBase SequenceMutationLipid BilayersProtein TransportProstaglandinsCervix UteriTissue Inhibitor of Metalloproteinase-1Tissue Inhibitor of Metalloproteinase-3DinoprostoneConnective TissueGene ExpressionPregnancy Trimester, FirstEscherichia coliBlotting, WesternFetal DevelopmentPlacentationSheepPregnancy ProteinsElectrophoresis, Polyacrylamide GelOrgan Culture TechniquesPregnancy Trimester, SecondModels, MolecularMitochondrial MembranesTissue and Organ ProcurementLiposomesProstaglandin-Endoperoxide Synthases